Summary & Overview
CPT 88304: Surgical Pathology, Level III Gross and Microscopic Examination
CPT code 88304 is a nationally recognized billing code for Level III surgical pathology, encompassing both gross and microscopic examination of tissue specimens. This procedure is fundamental in the diagnosis and management of numerous medical conditions, including neoplasms, abnormal cytological findings, and polyps. The code is widely utilized in laboratory settings, where pathologists analyze samples to provide essential clinical insights.
Major payers covering CPT code 88304 include Aetna, Blue Cross Blue Shield, Cigna Health, Medicare, and UnitedHealthcare. The publication offers a comprehensive overview of payer coverage, policy updates, and clinical benchmarks relevant to this code. Readers will gain insight into the clinical context of surgical pathology, typical sites of service, and the importance of accurate coding for laboratory-based procedures.
Key topics addressed include the role of CPT code 88304 in anatomic and clinical pathology, common diagnoses associated with its use, and related codes such as CPT code 88305. The summary also highlights the use of modifiers for professional and technical components, as well as the taxonomies linked to pathology services. This resource is designed to inform healthcare professionals, billing specialists, and policy analysts about current trends and requirements for surgical pathology billing and reimbursement.
CPT Code Overview
CPT code 88304 represents a Level III surgical pathology service involving both gross and microscopic examination of tissue specimens. This procedure is a core component of anatomic pathology, providing critical diagnostic information for a wide range of clinical scenarios. The typical site of service for CPT code 88304 is a laboratory setting, specifically designated as Place of Service 81. Surgical pathology services like this are essential for guiding patient management and treatment decisions across various healthcare settings.
Clinical & Coding Specifications
Clinical Context
A patient presents with a suspicious skin lesion, breast lump, colon polyp, or abnormal cervical cytology. The clinician performs a biopsy or excision of the tissue. The specimen is sent to the laboratory (Place of Service 81) for evaluation. A pathologist performs a Level III surgical pathology service, which includes both gross and microscopic examination of the specimen. The results inform diagnosis and guide further management.
Coding Specifications
-
Modifier
26: Used when reporting only the professional component of the pathology service (interpretation by the pathologist). -
Modifier
TC: Used when reporting only the technical component (preparation and processing of the specimen in the laboratory).
| Taxonomy Code | Specialty Name |
|---|---|
207ZP0102X | Anatomic Pathology |
207ZP0101X | Clinical Pathology |
207ZP0007X | Pathology |
- These taxonomies represent providers specializing in pathology, including both anatomic and clinical subspecialties.
Related Diagnoses
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C44.99: Other specified malignant neoplasm of skin- Relevant for pathology examination of skin lesions suspected to be malignant.
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D49.2: Neoplasm of unspecified behavior of bone, soft tissue, and skin- Used when the behavior of a neoplasm is unclear, requiring pathology review.
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N63: Unspecified lump in breast- Indicates a breast lump, often requiring biopsy and pathology evaluation.
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K63.5: Polyp of colon- Colon polyps are commonly excised and sent for pathology to determine their nature.
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R87.619: Unspecified abnormal cytological findings in specimens from cervix uteri- Used for abnormal cervical cytology specimens needing further pathology assessment.
Related CPT Codes
88305: Level IV — surgical pathology, gross and microscopic examination (for skin other than cysts, tags, debridement and plastic repair)
88305 is used for more complex specimens than those covered by 88304, such as skin biopsies excluding cysts, tags, debridement, and plastic repair. In clinical workflow, 88304 and 88305 may be used as alternatives depending on the specimen type. They are not typically billed together for the same specimen.
National Reimbursement Benchmarks
Medicare's national mean rate for CPT code 88304 is $28.54, which is lower than the BUCA (average commercial) mean rate of $32.78. Among the commercial payers, Blue Cross Blue Shield and Aetna have the highest mean rates, both above $35, while UnitedHealth Group and Cigna are closer to the BUCA average.
Rate dispersion, measured by the difference between the 75th and 25th percentiles, varies across payers. Blue Cross Blue Shield shows the widest spread at $23.67, indicating significant variability in rates. UnitedHealth Group has the tightest range at $17.33, suggesting more consistent reimbursement levels. Cigna and Medicare also display notable dispersion, with ranges of $26.33 and $29.00, respectively.
The table and chart below present the full breakdown of national benchmarks for CPT code 88304 by payer.
State Benchmarks
State: AK1 / 51
Alaska Benchmarks
Alaska exhibits a notably wide rate spread for CPT code 88304, particularly among commercial payers. Blue Cross Blue Shield and BUCA show a spread of $29.19 and $29.95 respectively (75th minus 25th percentile), indicating substantial variability in reimbursement. In contrast, Aetna and UnitedHealthcare display minimal spread, with all percentiles clustered closely together, suggesting consistent rates across providers. Medicare's spread is $27.00, reflecting moderate variability among its localities.
Compared to national averages, Alaska's mean rates for all commercial payers are significantly higher. Aetna's mean rate in Alaska is nearly three times the national mean, and Blue Cross Blue Shield, BUCA, and UnitedHealthcare also exceed their national benchmarks by wide margins. The table and chart below present the full breakdown of payer-specific reimbursement rates for CPT code 88304 in Alaska.
Key Insights for Alaska
- Aetna is the highest paying payer for CPT 88304 in Alaska, with a mean rate of $104.73, while Medicare is the lowest at $27.40.
- All commercial payers in Alaska reimburse at rates significantly above their respective national averages, with Aetna's mean rate nearly three times the national mean.
- The rate spread is widest for Blue Cross Blue Shield and BUCA, indicating substantial variability in commercial reimbursement compared to the more consistent rates from Aetna and UnitedHealthcare.
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